Hose connection



- Oct 28, 1941.

A. HEDEMAN 2,260,454

HOSE CONNECTION Filed July 26, 1940 16 :Y AVH fl-' MM INVENTQR fi/exa/rder edema/1 BYa a ATTORNEYS I Patented Oct. 4

" 2 Claims.

The invention relates to improvements in hose connections and has for an object to provide an improved hygienic connection between ;a flexible hose and a nipple or othen member which serves to connect the hose to other parts for use.

Hose connections of the type heretofore known have been. found very unsatisfactory for use in handling liquids intended for human consumption, such as beer, carbonated beverages, milk, and the like, for the reason that they were so constructed that the liquid under pressure seeped into the crevicebetween the inside surface of the hose and the exterior of the nipple. In such devices it is impossible to remove the liquid which has been forced into the annular pocket between the nipple and the hose, with the result that a very unsanitary condition developed. The accumulated liquid wasthere attacked by bacteria, causing putrefaction which'deleteriously affected the taste and imparted an odor to. liquid food thereafter passed through the hose.

It is an object of the present invention to overcome these difilculties by so constructing the hose connection that no pocket can be formed between the hose and the nipple even under the high pressure conditions existing when used with beer I and other beverages under pressure, or other fluid whether liquid, gaseous or mixtures thereof,

It is anotherobject of the invention to so construct the nipple that its extremity is formed with an annular ridge, the maximum diameter of whichis substantially at the extreme end of the nipple, thus precluding the formation of a pocket in which the liquid may accumulate.

It is another object to reduce the axial length of said ridge to a minimum so as to reduce the area of contact with the hose and therefore indicates a flexible hose made of a rubber -like material and the numeral'li indicates a nipple inserted therein. As shown, the nipple may be formed with a flange providing a shoulder ll against which may bear a collar H formed with threads 15 for connecting to other devices. I

It will be noted that the endof the nipple is provided with an annular enlargement or ridge IS, the maximum diameter of which is substantially in line with the extremity of the nipple l2. The'nipple may also be provided with a series of annular enlargements I! generally of the conformation shown. It is to be noted however, that the enlargements [1 are preferably made somewhat smaller in diameter than the terminal annular enlargement It, as appearing more clearly in Fig. 3, so as to make certain that maximum pressure will be applied as between the hose and the annulus Hi. The annuli Il may be regarded as serving as strain relievers to prevent the hose from being pulled off the nipple in case of a tension upon the hose. They are not intended howcrease the contact pressure and the sealing effect. I

It is another object of the invention to provide clamping means adapted to press the hose annular ridge whereby all between the hose and the firmly against said, seepage of the liquid nipple is effectively prevented.

Other objects will appear from the followin description of two illustrative embodiments of the invention taken togetherwith the attached drawing wherein: a Fig. l is a cross-sectional view of one form of hose connection embodying and illustrating the invention;

Fig. 2 is a similar view showing a modified form of nipple; and i Fig. 3 is an enlarged cross-section of a part of the form shown-in Fig. 1.

Referring to said drawing, the numeral H inever as sealing members since the annular ridge l6 effectively prevents the .entry of fluid between the hose and the nipple.

The numeral l8 designates a clamp of any suitable type for the purpose of pressing the hose against the annular ridge [6 and assuring the efiective sealing of the connection between the hose and the nipple. The use of a clamp is not essential but is desirable where the hose is to be used for transmitting liquid under substantial pressure.

Fig. 2 illustrates a modified embodiment of the invention in which the annulil'l are not used. The operation of the device is the same however in that effective sealing occurs at the top of the annular ridgel 6.

It ha?l been found that hose connections of the type ut izing the present invention permit keeping the hose in sanitary and hygienic condition as a tubular nipple fitting therein, the end of the I tubular nipple being formed with an integral annular ridge the maximum diameter of which occurs at the extreme end of the nipple, and a band contracted upon the exterior of the hose in 1m, with the said integral immunridge whereby formed with a plurality of integral annular ridges a tight seal is termed at the extreme end of the nipple and the formation of pockets or depresaionsis avoided.

- 2; In combination, a hose of flexible material, a tubular nipple fitting t1: tubular nipple being formed with an in a'ral annular ridge the maximum diameter of which oecurs at the extreme end 01' the nipple and l min. the e d of the of smaller diameter between said first-mentioned annular ridge and the other end of the nipple,

- and a band contracted upon the exterior of the hose in line with the said first-mentioned annular ridge, whereby a tight seal is tormed'at the end of the nipple and the formation of pockets or depressions is avoided. 

